Fedora Atomic is an operating system targets to containers. However, the documentation, for me, is very hard to read. In this document, I will share my adventure with Fedora Atomic, starting with post installation.
I have installed Fedora Atomic, now what?
Let’s say you want to install the
docker-compose for better understanding the directory structure of your new host; you also need to ping a host every hour; and of course, you want your shiny new docker application to be deploy to this machine.
Package Install with rpm-ostree
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When I run
on my newly setup docker in Fedora 21, it shows:
FATA Get http:///var/run/docker.sock/v1.16/version: dial unix /var/run/docker.sock: no such file or directory. Are you trying to connect to a TLS-enabled daemon without TLS?
The problem resolve after I re-login. So the error seems like that the permission is not yet applied, as I just add myself to docker group without logout.
So, if you cannot or don’t want logout just yet, use
sg docker "docker <subCommand> ..."
As long as you are in docker group in /etc/group, sg won’t ask you password.